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File: COBRA5272-FAQ_en.txtLocation: uClinux-dist/Documentation/COBRA5272/en/Author: Heiko Degenhardt (linux@sentec-elektronik.de)Contents: Frequently asked questions about the board.Version: v01.00Date: Fri Mar 22 15:34:04 CET 2002License: This document is under the GNU GPL (see uClinux-dist/COPYING)

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CHANGES020322 v01.00 Creation (hede)

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GENERAL

Q: What does "COBRA5272" mean?A: COBRA stands for "COldfire Board for Rapid Applications". The 5272 shows that the board is based on Motorola's ColdFire 5272.

Q: Where can I order the board? Is the a web site?A: You can order the board via the German distributor ELEKTRONIKLADEN. Their web site for the board (currently only in German language!) is

http://www.elektronikladen.de/cobra5272.html. The home page of the board is http://www.sentec-elektronik.de/cobra/.

Q: Ok, now I have the board. What are the first steps I should do to get a running image?A: Now that you have downloaded the uClinux-dist sources please read

./Documentation/COBRA5272/en/COBRA5272-Getting-started_en.txt to get started.COMMUNICATION

Q: What cable have I to use for communicating via the serial port?A: You can use a "normal" serial cable, not a so called "null modem

cable".

Q: What are the standard values for the communication parameters?A: Serial Port: 19200 Baud, 8n1 Server IP: 192.168.100.1 Client IP: 192.168.100.2 Netmask: 255.255.255.0 Gateway IP: 0.0.0.0 Ethernet: 00:00:00:00:00:01

Q: How can I configure the parameters for the commands that are executed on kernel start up?A: At start-up of the uClinux kernel the commands of the file

uClinux-dist/vendors/senTec/romfs/etc/rc get executed. Here you can configure for instance the IP address, the netmask, if, and if so, which directory gets mounted and so on. (HINT: To get a detailed description you should look into the manual pages of the commands, eg. "man ifconfig").

ERRORS/PROBLEMS

Q: The board allways does a reset. What can I do?A: Here are some things to check:

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a) Increase the value of the current clamp: The power supply should give around 500mA at 6V (if you have a (starter kit with a linear voltage regulator you can try to increase the voltage to around 7.5V).

b) Measure the voltage: On the starterkit board you find opposite to the bdm connector a row of LED's (D3..D10). On the left site of it there is a edge connector. There you have plus on the one site, and ground on the other. The voltage there should be >3.15V.

Q: "make" gives an error about a missing reference to "del_mtd_partitions"?A: You must set CONFIG_MTD_PARTITIONS in the kernel config!

Q: After "make dep" or "make" there are many messages scrolling out of the terminal window. How is it possible to read them?A: You can for instance "pipe" them into the program "tee" that writes them into a file, eg. "errs". To do that, just type: "make 2>&1 | tee errs".

FEEDBACK

If you find errors, or have some tips or questions concerning this

FAQ, please send an email to linux@sentec-elektronik.de. You'lleasily find out that I'm not a native English speaker, so feedbackis really welcome!

______________________________________________________________________(c) 2002, senTec Elektronik Gmbh, Heiko Degenhardt